Scaffolding for an experimental discovery API letting users inject links in the recommended pane of…

chrome/browser/extensions/api/discovery/suggested_links_registry.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_API_DISCOVERY_SUGGESTED_LINKS_REGISTRY_H_
+#define CHROME_BROWSER_EXTENSIONS_API_DISCOVERY_SUGGESTED_LINKS_REGISTRY_H_
+#pragma once
+
+#include <map>
+
+#include "chrome/browser/extensions/api/discovery/suggested_link.h"
+#include "chrome/browser/profiles/profile_keyed_service.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace extensions {
+
+// This class keeps track of links suggested by an extension using the discovery
+// API.
+class SuggestedLinksRegistry : public ProfileKeyedService {
+ public:
+  // A list of ExtensionSuggestedLink's.
+  typedef std::vector<linked_ptr<extensions::SuggestedLink> > SuggestedLinkList;
+
+  SuggestedLinksRegistry();
+
+  // Adds a suggested link from |extension_id|. Takes ownership of |item| in all
+  // cases.
+  void Add(const std::string& extension_id,
+      scoped_ptr<extensions::SuggestedLink> item);
+
+  // Returns all the links suggested by |extension_id|.
+  const SuggestedLinkList* GetAll(const std::string& extension_id) const;
+
+  // Remove a specific link suggested by |extension_id|.
+  void Remove(const std::string& extension_id, const std::string& link_url);
+
+  // Clears all suggested links for |extension_id|.
+  void ClearAll(const std::string& extension_id);
+
+ private:
+  // Maps extension id to a list of notifications for that extension.
+  typedef std::map<std::string, SuggestedLinkList> SuggestedLinksMap;
+
+  virtual ~SuggestedLinksRegistry();
+
+  // Gets suggested links for a given extension id.
+  SuggestedLinkList& GetAllInternal(const std::string& extension_id);
+
+  SuggestedLinksMap suggested_links_;
+
+  DISALLOW_COPY_AND_ASSIGN(SuggestedLinksRegistry);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_DISCOVERY_SUGGESTED_LINKS_REGISTRY_H_